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IMPROVEMENT IN GATES.

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TOALL WHOM'IT MAY OONCERN:

Be it known that I, RILEY JAMES GILBERT, of'I-Ianover, Rock county, and State of Wisconsin, have invented a new and improved Grate; and I do hereby declare that `the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon', making a part Aof this specication, in which- Figure 1 is a perspective view.

Figure 2 is a cross-section of'the inclined way G, showing how the upright piece A is supported thereby. Figure 3 is a cross-section of the inclined way II, showing how the upright piece K issupported thereby.

Figure 4 is also a sectional drawing, showing how the gate is operated bythe handles and cords; and

Figure 5 is a view from the side opposite to that shown in fig. .1 of simply the gate and the ways.

Tle natureof my invention consists, first, in separately supporting and guiding each end of the gate on parallel double inclined ways, constructed substantially as hereinafter described; and second, in operating a gate supported on two parallel double-inclined ways, by means of handles and cords provided with stops, in such a manner that the gate is operated, not only by the cord, but by'its own momentum and gravity, substantially as hereinafter described.

-To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation. I

I construct my gate in any desired form, providing it with the upright piece A, to which is secured a` friction-pulley, d, Iig. 2, that runs on the rail or track piece c of the double-inclined way VCr, which inlturn is supported at each end by the posts C and C.4 The other end of the gato plays between the vertical guiding rollers L and M, (attached to the post C,) and is supported in a similar manner as the outerendofthe gate by a pulley, d', fig. 3, that is attached to the upright picce K, and runson the rail or track piece c ofthe doubleinclined Way H.' Through a slot or mortise in the upper end-0f the upright piece A passes the central portion ot' therope D, that is securedto the upright piece by a pin, or in any desired manner. The endsof this operating cord D .passing out on either side through or between the friction-pulleys, shown at I?, or more fully shown in gs. 2 and 4, are carried over the pulleys L, that are attached to the arms ofthe posts F. Both ends of the cord'D 4are provided with aknot or stop,f, that will not pass over the pulley t. These stops-are so arranged as to strike against the pulley or sidel of the armof the post, when the upright piece A has arrived atA the posij tion shown by the dotted line A', g. 1. I l

Wre it not for the stops f-'thegate in the hands of the unskilled operator would not. operate, inasmuch as continual pulling on either end of the oord would stop it at the apex or summit of the inclined ways; but, with the use ofthe stop,the force of the pull being taken off of the cord when the gate is at the dotted line A', the latter (that is the gateiiscarried by its own momentum over the summit, and thence by gravity down the descending portions of theginclined ways.

1. The inclined, ways G and H, when constructed with ascending and descending inclincs7 and used to guide and support separately the ends of a gate, substantially as described.

2. `Operating a gate, having its ends separately supported on two parallel, double-inclined ways, ny means of the handles E and cordI), the latter being provided with a. stop, f, in such a manner that thergate is operated bythe cord, together with its own momentum and gravity, substantially-as described. l RILEY JAMES GILBERT.

Witnesses:

S. D. LocKE, G. L. KNOX. 

